The study investigates the efficiency of carbon capture in oxyfuel combustion compared to air combustion, using five different flue gases from various industrial processes. Monoethanolamine (MEA) is selected as the absorbent, and the carbon capture process is modeled using Aspen Plus. The results show that oxyfuel combustion requires significantly less energy, especially at high carbon dioxide removal rates (over 90%), with savings up to 84%. Additionally, 100% carbon capture is achievable in oxyfuel combustion due to the higher concentration of carbon dioxide in the flue gas, which enhances the driving force for mass transfer. Oxyfuel combustion also eliminates the production of nitrogen oxides, further reducing greenhouse gas emissions. The study concludes that oxyfuel combustion is a technically promising solution for carbon capture and storage, offering significant energy savings and environmental benefits.The study investigates the efficiency of carbon capture in oxyfuel combustion compared to air combustion, using five different flue gases from various industrial processes. Monoethanolamine (MEA) is selected as the absorbent, and the carbon capture process is modeled using Aspen Plus. The results show that oxyfuel combustion requires significantly less energy, especially at high carbon dioxide removal rates (over 90%), with savings up to 84%. Additionally, 100% carbon capture is achievable in oxyfuel combustion due to the higher concentration of carbon dioxide in the flue gas, which enhances the driving force for mass transfer. Oxyfuel combustion also eliminates the production of nitrogen oxides, further reducing greenhouse gas emissions. The study concludes that oxyfuel combustion is a technically promising solution for carbon capture and storage, offering significant energy savings and environmental benefits.